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Fix ScalarFormatter.format_ticks for non-ordered tick locations. #20542

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Merged
merged 1 commit into from
Jun 28, 2021
Merged

Fix ScalarFormatter.format_ticks for non-ordered tick locations. #20542

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10 changes: 10 additions & 0 deletions lib/matplotlib/tests/test_contour.py
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Original file line number Diff line number Diff line change
Expand Up @@ -464,3 +464,13 @@ def test_contour_line_start_on_corner_edge():
cbar = fig.colorbar(filled)
lines = ax.contour(x, y, z, corner_mask=True, colors='k')
cbar.add_lines(lines)


@pytest.mark.style("default")
def test_contour_autolabel_beyond_powerlimits():
ax = plt.figure().add_subplot()
cs = plt.contour(np.geomspace(1e-6, 1e-4, 100).reshape(10, 10),
levels=[.25e-5, 1e-5, 4e-5])
ax.clabel(cs)
# Currently, the exponent is missing, but that may be fixed in the future.
assert {text.get_text() for text in ax.texts} == {"0.25", "1.00", "4.00"}
5 changes: 1 addition & 4 deletions lib/matplotlib/ticker.py
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Expand Up @@ -817,10 +817,7 @@ def _set_order_of_magnitude(self):
if self.offset:
oom = math.floor(math.log10(vmax - vmin))
else:
if locs[0] > locs[-1]:
val = locs[0]
else:
val = locs[-1]
val = locs.max()
if val == 0:
oom = 0
else:
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